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Summary of Contents for BK Precision 2650
- Page 1 Instruction Manual Model 2650 3.3GHz Spectrum Analyzer...
- Page 2 Warm-up time To ensure the 100% specified measurement accuracy the 2650 needs to have at list 10 minutes of warm-up time, before performing any crucial measurements in the field. Always perform 10 min warm-up if unit is going to work in any stationary applications.
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Page 3: Table Of Contents
..........................7 Product Introduction....................7 Standard accessories....................8 Optional accessories.....................8 2 Specifications ........................9 Front panel view......................12 3 2650 Front Panel at a Glance ...................13 4 Description Of Screen ....................15 5 Function Key Menu .....................16 List of the Function key menus.................16 Menu tree........................18 6 Preparing For Operation ...................23... - Page 4 17.2 Setting the peak search <PEAK SEARCH> ............34 17.3 Changing marker point reference level <CONV>..........34 Save/Load <SAVE/LOAD> ..................35 18.1 Setting location for trace storage................35 18.2 Setting the location to store the parameter.............35 18.3 Saving the data......................35 2650 Instruction Manual Rev.1.a 4 of 60...
- Page 5 ....................47 23.1 RS-232C specifications ....................47 23.2 How to connect......................47 23.3 Command description....................47 23.4 Input the frequency ....................53 23.5 Sample of remote program..................53 PC Software Model AK 2650 .................53 24.1 Installation/Uninstallation procedure ..............53 Calibration procedures....................55 2650 Instruction Manual Rev.1.a 5 of 60...
- Page 6 25.1 Frequency characteristics check ................55 25.2 Reference level accuracy check ................56 25.3 Center frequency display check ................56 25.4 The display accuracy of the Frequency span............57 25.5 Linearity of the amplitude axis ................57 Service Information ....................58 2650 Instruction Manual Rev.1.a 6 of 60...
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Page 7: Overview
1. Compact and light The external dimensions are (W×H×D) 6.4×2.8×10.2” (162×70×260 mm). Weight is 3.7lb. (1.7 kg) including the battery. That alone make 2650 versatile hand healed unit for field use alone with stationary applications. 2. Frequency range 50kHz to 3.3GHz This bandwidth is cover W-CDMA, CDMA, PDC, PHS, GSM, 2.4GHz band wireless LAN,... -
Page 8: Standard Accessories
3) Accessory pouch. 4) Fuse (It has been installed in the inside) 5) Operating manual 6) Ni-MH Battery BP 2650 (Refer to “6.4 Installing the battery” for details.) Optional accessories 1.) Dipole antenna AN 301, AN 302, AN 303, AN 304 (Refer to “19.4 Electric field strength measurement”... -
Page 9: Specifications
-90dBc / Hz (typical, 100kHz offset, RBW : 3kHz, VBW : 100Hz, Sweep time : 0.3s) Spurious response less than -60dBc Harmonics less than -40dBc (50kHz to100MHz) less than -45dBc (100MHz to 3.3GHz) 2650 Instruction Manual Rev.1.a 9 of 60... - Page 10 Positive peak, Negative peak, Sample (when sweep time is 10ms or 30ms, only Sample can be set) Functions Marker NORM: displays frequency (7 digits max) and level (4 digits max) at marker point. 2650 Instruction Manual Rev.1.a 10 of 60...
- Page 11 Power source Battery Ni-MH Battery (included) External DC Pin jack, DC5V / 4A (BC 2650 included) Operating temperature 0 to 40°C (Guaranteed at 23 ±10°C, without soft carrying case) Operating humidity less than 40°C / 80%RH (Guaranteed at less than 33°C / 70%RH,...
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Page 12: Front Panel View
Front panel view. BK Precision Corporation reserves the right to make changes in design, specification and other information without prior notice. 2650 Instruction Manual Rev.1.a 12 of 60... -
Page 13: 2650 Front Panel At A Glance
2) Input connector SMA J type input connector. 3) External power connector Power connector. In use for external BC 2650 AC power adapter. 4) RS-232 connector RS-232C port. 2650 Instruction Manual Rev.1.a 13 of 60... - Page 14 Saves 100traces and 100setups, and loads 1trace and 1setup. 19) Print key Print screen key, if optional printer is connected. 20) RS-323C key Sets baud rate and transfers a current or saved trace. 2650 Instruction Manual Rev.1.a 14 of 60...
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Page 15: Description Of Screen
Sweep setting display Sweep time, Detection mode Calculation display Measuring display Current operation information display Loaded trace information display. Display current settings when the Currently measured value Display for function keys measuring function is used. 2650 Instruction Manual Rev.1.a 15 of 60... -
Page 16: Function Key Menu
EXECUTE DEL SAVE/LOAD>F5 EXECUTE LOAD SAVE/LOAD>F4 EXECUTE SAVE SAVE/LOAD>F3 INVT (display inverter) DSPL>F4 K) KeyST FREQ>F3 M/F PROBE MEAS>(F6)>F5 MAXHD CALC>F2 MEAS OFF MEAS>(F1~5)>F6 MINHD CALC>F3 MKR DELTA MKR>F2 MKR NORM MKR>F1 MODE MEAS>(F6)>(F1~3)>F1 2650 Instruction Manual Rev.1.a 16 of 60... - Page 17 SWEEP ALL SWEEP>F3 SWEEP AUTO SWEEP>F2 SWEEP MANU SWEEP>F1 TRACE SAVE/LOAD>F1 TRACE RS232C>F1 UNIT dBm REFER>F1 UNIT dBmV REFER>F3 UNIT dBV REFER>F4 UNIT dBµV REFER>F2 VBW ALL VBW>F3 VBW AUTO VBW>F2 VBW MANU VBW>F1 2650 Instruction Manual Rev.1.a 17 of 60...
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Page 18: Menu Tree
EncST < > 100M 0.1M Use encoder to set Center frequency Back Clear Space REFER Refer to “9. Reference Level” for details UNIT dB µV dB mV Use encoder to set Reference level 2650 Instruction Manual Rev.1.a 18 of 60... - Page 19 Use encoder to set VBW Refer to “19. Measuring Function” for details MEAS Power Ch Pw PROBE Use encoder to set parameter MODE BAND MEAS BAND CNTR WIDTH Use encoder to set parameter 2650 Instruction Manual Rev.1.a 19 of 60...
- Page 20 Ch Pw PROBE Input the probe ID (first time only) PROBE MEAS CP-2S Calculation Function” for details . Refer to “16. CALC NORM MAX HD MIN HD AVER OVRWR Use encoder to set parameter 2650 Instruction Manual Rev.1.a 20 of 60...
- Page 21 Use encoder to move marker Use <F3> function to Change marker position (NORM mode) PEAK SEARCH CONV NORM DELTA ZONE CNTR WIDTH dBm>W Use encoder to set zone center frequency (ZONE mode) 2650 Instruction Manual Rev.1.a 21 of 60...
- Page 22 Refer to “22. Data Output” for details RS232C TRACE BAUD CURR 38400 EXEC Use encoder to set port transfer Refer to “20. Screen Control” for details DISPL CTRS B.L. BLCTR INVT BUZZR Use encoder to set screen contrast level 2650 Instruction Manual Rev.1.a 22 of 60...
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Page 23: Preparing For Operation
Connection to power supply The BC 2650 AC adapter is both for the use with AC power supply and for charging the BP 2650 built-in battery. Connect the adapter as in the figure below and connect the AC plug to the power line (100-240 VAC, 50/60 Hz). -
Page 24: Replacing The Fuse
Replacing the fuse The fuse 5A/250V (slow-blow type) is used for the 2650 protection. To replace the fuse, turn the power off first, disconnect the AC adapter, remove the battery cover and on the back as shown in the figure below, remove the battery, and then take sufficient care to perform the replacement. Be sure to use the fuse supplied with the unit, or specified one. -
Page 25: Center Frequency
Use the unit key to set new value, <MHz (RS232C)> or <GHz (DSPL)>. NOTE: Any figures below the resolution (100 kHz) will be discarded. 4. Changing the settings: <F5> key deletes the entire value and allows you to input one from the beginning. 2650 Instruction Manual Rev.1.a 25 of 60... -
Page 26: Marker Position
NOTE: Frequency span can be set only by using encoder. Function keys are not available for this operation. 1. When encoder is turned, the frequency span changes in the specified step. ZERO 200K 500K 100M 500M Full 3.3GHz 2650 Instruction Manual Rev.1.a 26 of 60... -
Page 27: Reference Level
“Unit that is able to use it with the measuring function” dBµV/m dBµA/m UNIT (Electric filed strength measurement) (Magnetic field strength measurement) Setting AN 301 AN302 AN303 AN304 PR 26M MAXIMUM 159 to 178 MINIMUM 109 to 128 2650 Instruction Manual Rev.1.a 27 of 60... -
Page 28: Relation Between The Reference Level And Att, Amp (In Dbm Indication)
Relation between the reference level and ATT, AMP (in dBm indication) The programmable attenuator (ATT) and the reference amplifier (AMP) inside 2650 are automatically set according to the setting value of the reference level (REFER). (ATT cannot be set independently.) -
Page 29: Setting By Using The F1, F2 Keys
NOTE: When the ALL AUTO mode is set, in the right end of the RBW, VBW and SWEEP display area on the screen the <*> will be displayed. Selectivity (-60dBc width) becomes bigger than actual values by SSB phase noise when 3kHz and 10kHz. 2650 Instruction Manual Rev.1.a 29 of 60... -
Page 30: Video Bandwidth
1. When the <F3> key pressed, RBW, VBW and SWEEP are set according to the setting of SPAN. NOTE: When the ALL AUTO mode is set, in the right end of the RBW, VBW and SWEEP display area on the screen the <*> will be displayed. 2650 Instruction Manual Rev.1.a 30 of 60... -
Page 31: Sweep Axis · Detection Mode
: Traces the momentary value of the sample point. • NegPK (Negative Peak) : Traces the minimum value of the sample point NOTE: SMPL could be set only when sweep time set to10ms or 30ms. 2650 Instruction Manual Rev.1.a 31 of 60... -
Page 32: Auto Tuning
Sweeps are performed the set number of times, the maximum value of each point of trace data is displayed as a trace, at the end sweep is will be stop. 1024 ** (Unlimited) 2650 Instruction Manual Rev.1.a 32 of 60... -
Page 33: Min Hold Mode
NEXT dBm>W • This screen is displayed when NORM marker is selected. Marker could be manually moved in NORM mode. Peak search function, NEXT peak with search functions are available in this mode 2650 Instruction Manual Rev.1.a 33 of 60... -
Page 34: Moving The Marker
When unit of reference level is dBmV, the unit is changed from [dBmV] to [V]. When unit of reference level is dBV, the unit is changed from [dBV] to [V]. When unit of reference level is dBµV/m, the unit is changed from [dBµV/m] to [V/m]. 2650 Instruction Manual Rev.1.a 34 of 60... -
Page 35: Save/Load
For the loaded trace, you can use the marker, but cannot use a measuring function. • When you press the HOLD/RUN key, the loaded and the current traces are displayed overlapping each other. 2650 Instruction Manual Rev.1.a 35 of 60... -
Page 36: Clearing The Loaded Trace
F4 E/F ANT – Electric field strength measurement. F5 M/F Probe – Magnetic field strength measurement (optional) NOTE: The adjacent channel power measurement allows the user to measure the amount of (or ratio of) power leakage into adjacent radio channels. 2650 Instruction Manual Rev.1.a 36 of 60... -
Page 37: Channel Power Measurement
1. Use the <F2> key (CNTR) and encoder to set the zone center frequency. 2. Use the <F3> key (WIDTH) and encoder to set the zone width. Channel power Setting Measured Value measurement mode. Parameter 2650 Instruction Manual Rev.1.a 37 of 60... -
Page 38: Adjacent Channel Leakage Power Measurement
Use <F4> to set center frequency of Use <F4> to set center frequency of inside the screen automatically. the reference carrier wave. the reference carrier wave. 2650 Instruction Manual Rev.1.a 38 of 60... -
Page 39: Occupied Frequency Bandwidth Measurement
19.4 Electric field strength measurement <E/F ANT> <F4> Measures electric field strength with an optional dipole antenna. Allows using antenna other than options by creating and inputting the original calibration table. 2650 Instruction Manual Rev.1.a 39 of 60... - Page 40 It is each shown on MEAS area of LCD as “M/F AN 301”, “M/F AN 302”, “M/F AN 303”,“M/F AN 304” or “M/F USER”. • USER settings, is custom calibration table and there fore could be created by user. (Refer to “23.1 Command description” for details.) 2650 Instruction Manual Rev.1.a 40 of 60...
- Page 41 9 0 ° ° 2 7 0 ° 1 8 0 NOTE: All represented examples here with External RF antenna, and undistorted horizon. AN301 (900MHz, E plane) Antenna gain vs. Frequency 0.85 0.95 Ferquency (GHz) 2650 Instruction Manual Rev.1.a 41 of 60...
- Page 42 -1.5 1.25 1.35 1.45 1.55 1.65 Frequency (GHz) AN303 (2.0GHz, E plane) Antenna gain vs. Frequency Frequency (GHz) AN304 (2.4GHz, E plane) Antenna gain vs. Frequency 2.25 2.35 2.45 2.55 2.65 Frequency (GHz) 2650 Instruction Manual Rev.1.a 42 of 60...
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Page 43: Magnetic Field Strength Measurement
To start registration process push <MEAS> then <F6> key first. “Input PROBE ID” will appear in the measured value display area on the screen. Second, locate on the probe and input in to 2650 the 14-digit Probe ID from main keypad. Press the <F4> (ENTER) to confirm, press <F5> (CLEAR) to delete the entire value and allow reentering new one, press the <F6>...(Optional) -
Page 44: Screen Control
Use the <F1> key with encoder for display contrast adjustment 20.2 Switching ON and OFF the LCD backlight Use the <F2> key to switch on and off display back light on 2650 20.3 Adjusting the brightness of the LCD backlight Use the <F3>... -
Page 45: Enabling Or Disabling The Beep
21.2 Print screen When PT 2650 is connected to the unit and <PRINT> button was pressed once, 2650 is goes to the HOLD state and starts printing display image. It will remains in the HOLD state after the printing is finished. -
Page 46: Selecting The Trace To Transfer
NOTE: CR (0D[HEX]) + LF (0A[HEX]) is added to the tail of every data. 1. Center frequency CF ** [=0.0M/0.1M ~999.9M (0.1step) /0.0001G~3.3G(0.0001 step)] 2. Frequency span SP ** [** = ZERO/200k/500k/1M/2M/5M/10M/20M/50M/100M/200M/500M/1G/2G/FULL] 3. Reference level RF** [**= -40~10dBm/67~117dBµV/7~57dBmV/-53~-3dBV/96~154dBµV/m/109~178dBµA/m (all 1step) 4. Sweep time and Detection mode. 2650 Instruction Manual Rev.1.a 46 of 60... -
Page 47: Rs-232C Interface
“CR (0D[HEX])+ LF (0A[HEX])” is added to the tail of every command. When you send a command from your PC, 2650 returns a response. Responses include “OK” + CR + LF, “ERR” + CR + LF and “(response to command)” + CR + LF. - Page 48 9) Request the result of measuring function Command: MEASRES Data example: Case of channel power measurement… POW:-25.5dBm Case of adjacent channel power measurement… L: -44.7dBc U:-48.3dBc Case of occupied bandwidth measurement… C: 1.45G W20. 00k 2650 Instruction Manual Rev.1.a 48 of 60...
- Page 49 18) Set the mode of occupied bandwidth measurement Command: OBWMODE ** Command Mode N% POWER mode (** = N%/DB) XdB DOWN mode 19) Set the N% ratio of occupied bandwidth mesurement Command: OBWRATIO*** (*** = 80.0~99.9 [0.1 step unit %]) 2650 Instruction Manual Rev.1.a 49 of 60...
- Page 50 AVERAGE 26) Set the number of MAX HOLD OVER WRITE Command: MAXNO **** (**** = 2/4/8/16/32/64/128/256/512/1024/0) NOTE: Value 0 is for unlimited hold. 27) Set the number of MIN HOLD Command: MINNO **** 2650 Instruction Manual Rev.1.a 50 of 60...
- Page 51 35) Set the marker mode Command Marker mode Command: MKR***** NORM Normal marker (***** = NORM/DELTA) DELTA Delta marker 36) Set the marker position Command: NORMMKR***** (***** = Refer to [23.4 input the frequency]) 2650 Instruction Manual Rev.1.a 51 of 60...
- Page 52 The operation from the keys or (**** = ON/OFF) encoder of the main body and RS-232C commands will be NOTE: When 2650 remote control is ON, accepted. “REMOTE” sine will appears on the display. 2650 Instruction Manual Rev.1.a 52 of 60...
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Page 53: Input The Frequency
23.5 Sample of remote program This is an example of remote program for 2650. Program is designed to send following setting over RS-232C to 2650 shown below:... - Page 54 Install portion of the menu. Click Install button., Install repair screen will appear. At this point choose Repair for repair existing installation or Remove for complete uninstalling all AK 2650 software components, then click finish. 2650 Instruction Manual Rev.1.a 54 of 60...
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Page 55: Calibration Procedures
NOTE. Due to simplicity of 2650 software it cannot interfered with other software on client PC due to it design, it not require any system files be updated or re-new system dll library’s. Analyzer software use’s only Windows port recourses there fore it can’t be any system software problem at all if AK2650 software going to be uninstalled correctly. -
Page 56: Reference Level Accuracy Check
: OFF Sweep time : 1s Detection mode : SMPL Display scale : 2dB/div 25.3 Center frequency display check Measure the frequency with the peak search function of 2650. Measurement Setting of 2650 Specifications Judgment value Center Frequency frequency... -
Page 57: The Display Accuracy Of The Frequency Span
Adjust the level of the calibration unit so that the peak is at the top of the amplitude axis (0th div), and regard the point set at that time as the reference. Gradually lower the output, starting from the reference, and measure the amplitude value of 2650. Setting of... -
Page 58: Service Information
America shipping fees contact B&K Precision Corp. B&K Precision Corp. 22820 Savi Ranch Parkway Yorba Linda, CA 92887 Email: service@bkprecision.com Include with the instrument your complete return shipping address, contact name, phone number and description of problem. 2650 Instruction Manual Rev.1.a 58 of 60... - Page 59 This warranty gives you specific rights and you may have other rights, which vary from state-to-state. Model Number: ______________ Date Purchased: __________ 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com 2650 Instruction Manual Rev.1.a 59 of 60...
- Page 60 22820 Savi Ranch Pkwy Yorba Linda, CA 92887 TEL: 714-921-9095 PN: 481-410-9-001 FAX: 714-921-6422 Printed in the U.S.A. ©2003 B&K Precision Corp. www.bkprecision.com...
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